Hot subdwarf stars studied with Gaia

DOI

In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys and the availability of the Gaia mission Early Data Release 3 (EDR3), we compiled new releases of two catalogues of hot subluminous stars: The data release 3 (DR3) catalogue of the known hot subdwarf stars contains 6616 unique sources and provides multi-band photometry, and astrometry from Gaia EDR3 as well as classifications based on spectroscopy and colours. This is an increase of 742 objects over the DR2 catalogue. This new catalogue provides atmospheric parameters of 3087 stars and radial velocities of 2791 stars from the literature. In addition, we have updated the Gaia Data Release 2 (DR2) catalogue of hot subluminous stars using the improved accuracy of the Gaia EDR3 data set together with updated quality and selection criteria to produce the Gaia EDR3 catalogue of 61,585 hot subluminous stars, representing an increase of 21785 objects. The improvements, compared to Gaia DR2, in Gaia EDR3's astrometry and photometry have enabled us to define more sophisticated selection functions. In particular, we improved hot subluminous star detection in the crowded regions of the Galactic Plane as well as in the direction of the Magellanic Clouds by including sources with close apparent neighbours but with flux levels that dominate the neighbourhood.

Cone search capability for table J/A+A/662/A40/hotsd (Hot SD Gaia EDR3 catalogue)

Cone search capability for table J/A+A/662/A40/knownhsd (Known hotSD catalogue)

Identifier
DOI http://doi.org/10.26093/cds/vizier.36620040
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/662/A40
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/662/A40
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/662/A40
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/662/A40
Provenance
Creator Culpan R.; Geier S.; Reindl N.; Pelisoli I.; Gentile Fusillo N.,Vorontseva A.
Publisher CDS
Publication Year 2022
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy